Dr John Blazak

John completed his medical degree at the University of Queensland in 2007 and then went onto complete dual training in Radiology and Nuclear Medicine in 2016 before becoming the Director of Nuclear Medicine at the Sunshine Coast University Hospital in early 2017.

John is also involved in Radiology training, currently holding the position of Network Training Director for the Sunshine Coast Radiology training hub and has a special interest in Oncology imaging, particularly of thoracic and head and neck malignancies.


Dr Stefanie Lovell

Dr Stefanie Lovell completed a Bachelor of Health Sciences at the University of Adelaide in 2007, before completing a Bachelor of Medicine Bachelor of Surgery at the University of Queensland in 2011.
Stef completed her Radiology training at the Royal Brisbane and Women’s Hospital in mid 2023. Prior to this, Stef worked in General Surgery and Urology for several years which
inspired an interest in abdominal radiology. Stef commenced a Hybrid Radiology Fellowship in Body Imaging at Qscan in August 2023.
She has an interest in teaching and supporting junior doctors and registrars, having held a title of Associate Lecturer at the University of Queensland since 2018, and Chief Registrar at RBWH in her final training year.

Outside of work, Stef enjoys keeping fit, trying new restaurants, and travelling.

Dr Sean Robison

Dr Sean Robison (BAppSc, MBBS, FRANZCR) obtained his Bachelor of Medicine, Bachelor of Surgery with Honours from the Australian National University in 2008. He undertook his specialist radiology training at Austin Health, Melbourne, during which time he completed a Master of Medicine (Radiology) at Melbourne University. Since qualifying, Sean has obtained fellowships in Breast Imaging at Northwest Breastscreen, Melbourne, and Cardiothoracic Imaging at the University of Toronto, Canada. Sean has a strong research grounding, having presented research findings at international conferences and he has first author publications in international journals.

Sean has a particular subspeciality interest in breast imaging with skills in all breast imaging modalities and biopsy techniques. He has additional interests in chest and cardiac imaging, he holds CTCA accreditation, and he has undertaken a Visiting Fellowship in musculoskeletal imaging with ProScan Imaging in Cincinnati, USA.

Sean joined Qscan Group in 2022 and holds appointments at ACT Health and ACT Breastscreen. He has strong links to the breast oncology team and contributes to numerous multidisciplinary team meetings. He has an interest in junior doctor and staff education, and regularly contributes to the education of other medical professionals in the ACT. In his spare time, he loves road cycling and exploring the hills around Canberra and beyond.


  • Breast imaging
  • Cardiothoracic imaging
  • Musculoskeletal imaging

Austin Health, Melbourne, VIC


  • Northwest Breastscreen, Melbourne, VIC
  • University of Toronto, Canada
  • ProScan Imaging Cincinnati, USA

Dr Zachary Drew

Dr Zachary Drew completed his Bachelor of Medicine, Bachelor of Surgery at the University of Queensland in 2015.

He completed residence and Radiology Registrar training at the Royal Brisbane and Women’s
Hospital, and will receive RANZCR fellowship at the end of 2023.

Zachary has entered Nuclear Medicine training in his fifth year of Radiology and will undertake the
first year of his Nuclear Medicine fellowship with Qscan in 2023.

Zachary’s interests include neuroimaging, oncology and theranostics.

Dr Nicole Waters

Dr Nicole Waters completed her Bachelor of Medicine, Bachelor of Surgery at Griffith University in 2012, before undergoing an internship and residency at the Princess Alexandra Hospital, Brisbane. She was awarded a fellowship with RANZCR in February 2021 after completing radiology training at the Royal Brisbane and Women’s Hospital.

Nicole completed a fellowship in musculoskeletal imaging with Qscan Radiology Clinics in February 2022. 

Her interests include musculoskeletal imaging, obstetrics and gynaecology imaging, emergency radiology and imaged-guided procedures. 

Dr Vinicius Carraro do Nascimento

Vini completed his medical studies at the Federal University Foundation of Health Sciences of Porto Alegre, Brazil, in 2010.

In 2011 he moved to Australia and after obtaining his AMC Certificate worked for two years as a clinical and surgical resident medical officer at St John of God Subiaco Hospital, Perth. Vini also worked as an assistant surgeon in breast and robotic prostatectomy, before starting his radiology training in Western Australia. He then became a fellow of the Royal Australian and New Zealand College of Radiologists (FRANZCR) in 2019. Vini then relocated to New Zealand completing a one-year fellowship in interventional radiology. From May 2020 to May 2022, he completed an additional fellowship in interventional neuroradiology at Gold Coast University Hospital, where he works as a consultant interventional neuroradiologist.

Vini has continually been involved with teaching and research. During his medical school, he was an anatomy and pathology tutor. In more recent years, Vini has delivered lectures to radiology registrars both in Australia and New Zealand, as a Clinical Lecturer of Otago University. He also provides tutorials for Lightbox Radiology and is thrilled to be part of the Qscan team.

As a native of Brazil, he is passionate about soccer and his other interests, apart from work, are going to the gym, running along the beautiful Gold Coast beaches, and enjoying time with family.

Dr Robert Keays

Dr Robert Keays completed his Bachelor of Medicine, Bachelor of Surgery at Griffith University in 2008, before undergoing an internship and residency at the Princess Alexandra and Gold Coast Hospitals. He was awarded a fellowship with RANZCR in July 2021 after finishing his radiology training at the Royal Brisbane and Women’s Hospital.

Robert also completed a fellowship in musculoskeletal imaging with Qscan Radiology Clinics in August 2022, where he was mentored primarily by Dr Matthew Budak.

His interests include musculoskeletal and sports imaging, imaged-guided musculoskeletal procedures, and emergency radiology.

Dr Humberto Tibau

Dr Humberto Tibau was a consultant radiologist in Brazil for 10 years before moving to Australia in 2018.

Humberto worked at the Townsville University Hospital as a senior registrar, and after getting his FRANZCR certification, he became a consultant radiologist at the same hospital. He joined Qscan Radiology Clinics in December 2020 and started an MSK fellowship in 2022.

Humberto’s subspecialty interests include MSK, abdominal imaging, and interventional procedures.

Dr Marianne Cossens

Dr Marianne Cossens completed her medical degree at Bond University in 2012, where she was placed on the Dean’s Commendation List. She then undertook her residency at the Princess Alexandra Hospital and the Gold Coast University Hospital, before completing her radiology training at the Royal Brisbane and Women’s Hospital in 2022. In 2022, she also commenced a body imaging fellowship with Qscan.

In addition to her medical degree, Marianne has undergraduate qualifications in optometry from the Queensland University of Technology, where she graduated with Honours and a prize for clinical excellence.

Marianne’s subspecialty interests include body MRI, women’s imaging, and neuroimaging. She also enjoys teaching registrars and junior doctors, and has lectured in surgical anatomy at the University of Queensland on a number of occasions.

Dr Kael Baker

Kael completed his radiology training in Auckland and postgraduate medical degree in Adelaide and has recently completed a Musculoskeletal fellowship with QScan.

His interests include musculoskeletal MRI, ultrasound and CT guided procedures and pain management, including RF ablation

His passion for musculoskeletal medicine started with a degree in anatomy, and continues with a formal publication in 2022, engagement with local orthopaedic and radiology trainee teaching sessions, and interfaculty teaching with Qscan’s radiographer and sonographer CPD evenings.